She has a sad backstory and I felt bad about her circumstances, sure. But that has nothing to do with what she did to Kei.I really cant understand how people are this against Emma.
She chose to be an indentured servant to Hera, even though Hera gave her an out. She could have still be a friend with options instead of a servant who are banned from emoting. By becoming a servant she became a pawn for Hera to use against Aine. She deliberately choose Aine over safety and health of her first love, twice. Her plans to move in with Kei put a giant crosshair on his back again.
I am not into revenge. I can put myself into Kei's place and see myself acting decent and friendly to Emma and Aine. Let bygones be bygones. But building a relationship requires trust. I can't see myself trusting them in any way or form. On the contrary I fully expect them to backstab me for the sake of their codependent relationship if circumstances require it.